JP6895521B2 - Upstream power control method and equipment - Google Patents

Description

The examples of this application relate to the communication field, and more specifically to uplink power control methods and devices.

The uplink transmission power in the Long Term Evolution (called "LTE") system was determined by the power control parameters placed on the network side of the terminal device and the downlink path loss measured by the terminal device. It is a thing. In the uplink transmission of future wireless communication systems, a plurality of different uplink transmission modes include, for example, a plurality of uplink multiple access modes, an uplink signal transmission using a plurality of different beams, a mode using a plurality of precodings, or a plurality of uplink transmission modes. A mode using transmission scheduling is introduced, but in the prior art, the method of performing uplink power control cannot meet the requirements of different uplink transmission modes. Therefore, it is necessary to provide an uplink power control method in a communication system to support a plurality of different uplink transmission modes.

The present application provides uplink power control methods and devices, which can flexibly adjust uplink transmission power to meet the requirements of different transmission modes and apply to communication systems that support multiple transmission modes.

The uplink power control method provided in the first aspect of the present invention.
The terminal device receives the uplink power control information transmitted from the network device, and
The terminal device determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information, the target transmission mode is the target uplink multiple connection mode, or the target transmission mode is the target uplink beam. Yes, or the target transmission mode is the target uplink precoding mode, or the target transmission mode is the target transmission scheduling mode.
The terminal device includes determining a target transmission power when transmitting a target uplink signal using the target transmission mode based on the target power control parameter.

Regarding the uplink power control method of the present application, the terminal device determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information transmitted from the received network device. As a result, when the terminal device transmits the uplink signal using different transmission modes, the uplink transmission power corresponding to the transmission mode may be determined by using an independent uplink power control process, and the uplink transmission power can be flexibly set. It can be tuned to meet the requirements of different transmission modes and is applicable to communication systems that support multiple transmission modes.

Combining the first aspects, in the embodiment of the first aspect, the target transmission mode is one of a plurality of transmission modes.

Combining the first embodiment and the other embodiment of the first embodiment, the target transmission mode is one of a plurality of candidate transmission modes in which the terminal device transmits the target uplink signal. It is a candidate transmission mode, or the target transmission mode is a transmission mode that the terminal device needs to use in order to transmit the target uplink signal.

Combining the first embodiment and the above-described embodiment, in the other embodiment of the first embodiment, the uplink power control information includes open-loop power control information, and the open-loop power control information includes a plurality of open-loop power control information. The open-loop power control parameters corresponding to the transmission modes of are included, and the plurality of transmission modes include the target transmission mode.

Here, the terminal device determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information.
The terminal device includes determining a target open-loop power control parameter corresponding to the target transmission mode in the open-loop power control parameter based on the open-loop power control information.

In the other embodiment of the first aspect by combining the first embodiment and the above-described embodiment, the terminal device may receive the uplink power control information transmitted from the network device.
The terminal device includes receiving the open-loop power control information transmitted by the network device by a radio resource control RRC message.

Combining the first embodiment and the above embodiment, in the other embodiment of the first embodiment, the target open loop power control parameter is among the uplink target received power, the path loss factor, and the sounding reference signal SRS power adjustment value. Includes at least one of.

Combining the first embodiment and the above-described embodiment, in the other embodiment of the first embodiment, the uplink power control information includes power adjustment command information.

Here, the terminal device determines the target power control parameters corresponding to the target transmission modes in the plurality of transmission modes based on the uplink power control information.
The terminal device includes determining a target closed-loop power adjustment value corresponding to the target transmission mode based on the power adjustment command information and the preset correspondence, and the preset correspondence is the power adjustment command information. This is the correspondence with the closed loop power adjustment value.

Combining the first embodiment and the above embodiment, in another embodiment of the first embodiment, the target corresponding to the target transmission mode by the terminal device based on the power adjustment command information and the preset correspondence relationship. Determining the closed-loop power adjustment value is
The terminal device determines the target correspondence from the preset correspondence based on the target transmission mode.
The terminal device includes determining the target closed loop power adjustment value based on the power adjustment command information and the target correspondence relationship.

In the other embodiment of the first aspect by combining the first embodiment and the above-described embodiment, the terminal device may receive the uplink power control information transmitted from the network device.
The terminal device includes receiving the downlink control signaling DCI transmitted from the network device, and the DCI includes the power adjustment command information.

Combining the first embodiment and the above embodiment, in the other embodiment of the first aspect, the target closed loop power adjustment value is an adjustment value for which the target transmission power is relative to the first transmission power, and the first transmission. The electric power is the transmission power used when the terminal device last transmitted the same uplink signal as the target uplink signal type, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the type of the target uplink signal when the terminal device previously used the target transmission mode. It is the transmission power used when transmitting the same uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device, and said. The same uplink transmission power as the target uplink type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target transmission mode. It is the transmitted power of the determined target uplink signal.

In combination with the first embodiment and the other embodiment of the first embodiment, the method further comprises.
The terminal device includes transmitting the target uplink signal to the network device using the target transmission mode and the target transmission power.

Combining the first embodiment and the above embodiment, in the other embodiment of the first embodiment, the target uplink signal is among the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS and the demodulation reference signal DMRS. It is one of.

Combining the first embodiment and the above embodiment, in the other embodiment of the first aspect, the target uplink multiple access mode is orthogonal frequency division multiple access DFT-S-OFDM by discrete Fourier transform diffusion, cyclic prefix orthogonality. It is one of frequency division multiple access CP-OFDM, single carrier frequency division multiple access SC-FDMA, and orthogonal frequency division multiple access OFDMA.

The uplink power control method provided in the second aspect of the present invention.
The network device determines the uplink power control information, and the uplink power control information determines the target power control parameter corresponding to the target transmission mode by the terminal device, and the target transmission mode is based on the target power control parameter. Is used to determine the target transmit power when transmitting a target uplink signal using, the target transmission mode is a target uplink multiple connection mode, or the target transmission mode is a target uplink beam, or the target. The transmission mode is the target uplink precoding mode, or the target transmission mode is the target transmission scheduling mode.
The network device includes transmitting the uplink power control information to the terminal device.

According to the uplink power control method of the present application, the network device can determine the target power control parameter corresponding to the target transmission mode based on the uplink power control information received by the terminal device by transmitting the uplink power control information to the terminal device. Let me do it. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

Combining the second aspect, in the embodiment of the second aspect, the target transmission mode is one of a plurality of transmission modes.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the target transmission mode is one of a plurality of candidate transmission modes in which the terminal device transmits the target uplink signal. It is a candidate transmission mode, or the target transmission mode is a transmission mode that the terminal device needs to use in order to transmit the target uplink signal.

Combining the second embodiment and the above-described embodiment, in the other embodiment of the second embodiment, the uplink power control information includes open-loop power control information, and the open-loop power control information includes a plurality of open-loop power control information. The open-loop power control parameters corresponding to the transmission modes of the above are included, the plurality of transmission modes include the target transmission mode, and the open-loop power control information is the target transmission of the terminal device in the open-loop power control parameters. Used to determine the target open loop power control parameters corresponding to the mode.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the network device transmitting the uplink power control information to the terminal device may be transmitted.
The network device includes transmitting the open-loop power control information to the terminal device by a radio resource control RRC message.

Combining the second embodiment and the above embodiment, in the other embodiment of the second embodiment, the target open loop power control parameter is among the uplink target received power, the path loss factor, and the sounding reference signal SRS power adjustment value. Includes at least one of.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the uplink power control information includes power adjustment command information, and the power adjustment command information is obtained by the terminal device. It is used to determine the target closed-loop power adjustment value corresponding to the target transmission mode based on the power adjustment command information and the preset correspondence, and the preset correspondence is the power adjustment instruction information and the closed-loop power adjustment. Correspondence with the value.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the network device transmitting the uplink power control information to the terminal device may be transmitted.
The network device includes transmitting downlink control signaling DCI to the terminal device, and the DCI includes the power adjustment command information.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the target closed loop power adjustment value is an adjustment value for which the target transmission power is relative to the first transmission power, and the first transmission The electric power is the transmission power used when the terminal device last transmitted the same uplink signal as the target uplink signal type, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the type of the target uplink signal when the terminal device previously used the target transmission mode. It is the transmission power used when transmitting the same uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device, and said. The same uplink transmission power as the target uplink type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target transmission mode. It is the transmitted power of the determined target uplink signal.

In combination with the second embodiment and the other embodiment of the second embodiment, the method further comprises.
The network device includes receiving the target uplink signal transmitted by the terminal device using the target transmission mode and the target transmission power.

Combining the second embodiment and the above embodiment, in the other embodiment of the second embodiment, the target uplink signal is among the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS and the demodulation reference signal DMRS. It is one of.

Combining the second embodiment and the above embodiment, in another embodiment of the second embodiment, the target uplink multiple access mode is orthogonal frequency division multiple access DFT-S-OFDM by discrete Fourier transform diffusion, cyclic prefix orthogonality. It is one of frequency division multiple access CP-OFDM, single carrier frequency division multiple access SC-FDMA, and orthogonal frequency division multiple access OFDMA.

The terminal device provided in the third aspect of the present invention is used to carry out the method in any possible realization of the first aspect or the first aspect. Specifically, the terminal device includes a functional module for performing the method in any possible realization of the first aspect or the first aspect.

The network device provided in the fourth aspect of the present invention is used to carry out the method in any possible realization of the second aspect or the second aspect. Specifically, the network device includes a functional module for performing the method in any possible embodiment of the second or second aspect.

The terminal device provided in the fifth aspect of the present invention includes a processor, a memory and a transmitter / receiver. By communicating with each other via an internal connection circuit between the processor, the memory, and the transmitter / receiver, and transmitting a control and / or a data signal, the terminal device may be any of the first aspect or the first aspect. Perform the method in the possible implementation of.

The network device provided in the sixth aspect of the present invention includes a processor, a memory and a transmitter / receiver. By communicating with each other via an internal connection circuit between the processor, the memory, and the transmitter / receiver, and transmitting control and / or data signals, the network device can be made of any of the second or second aspects. Perform the method in the possible implementation of.

The computer-readable medium provided in the seventh aspect of the present invention is used to store a computer program, wherein the computer program is any possible realization of the first aspect or the first aspect. Includes instructions used to perform the method in the form.

The computer-readable medium provided in the eighth aspect of the present invention is used to store a computer program, which is any possible realization of the second or second aspect. Includes instructions used to perform the method in the form.

It is a schematic flowchart which shows the uplink power control method by an Example of this application. It is another schematic flowchart which shows the uplink power control method by an Example of this application. It is a schematic flowchart which shows the uplink power control method by another Example of this application. It is another schematic flowchart which shows the uplink power control method by another Example of this application. It is a schematic block diagram which shows the terminal apparatus according to the Example of this application. It is a schematic block diagram which shows the network apparatus according to the Example of this application. It is a schematic block diagram which shows the terminal apparatus by another Example of this application. It is a schematic block diagram which shows the network apparatus by another Example of this application.

Hereinafter, the technical solution means in the embodiment of the present application will be clearly and completely described with reference to the drawings in the embodiment of the present application.

The technical solution of the embodiment of the present application is, for example, a general-purpose European system mobile communication (abbreviated as “GSM”) system, a code division multiple access (abbreviated as “CDMA”) system. , Wideband Code Division Multiple Access (abbreviated as "WCDMA") system, General Packet Radio Service (abbreviated as "GPRS"), Long Term Evolution (abbreviated as "LongTele") ) System, LTE Frequency Division Duplex (abbreviated as "FDD") system, LTE Time Division Duplex (abbreviated as "TDD"), Universal Mobile Communication (Universal Mobile System) ”) Or Wymax (World Wide Access for Microwave Access, abbreviated as“ WiMAX ”) communication system, new radio (New Radio, NR) system which is the 5th generation mobile communication system, and can be used for various communication systems. ..

In the embodiment of the present application, the terminal device includes a mobile station (Mobile Station, abbreviated as "MS"), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a user device (User Equipment, UE), a handset (handset), and the like. The terminal device communicates with one or more core networks via a radio access network (Radio Access Network, RAN), including, but not limited to, portable equipment, vehicle, and the like. For example, the terminal device may be a mobile phone (or called a "honeycomb phone"), a computer having a radio communication function, or the like, and the terminal device may be a portable, compact, handheld, or computer. It may be a built-in type or an in-vehicle type mobile device.

In the embodiment of the present application, the network device is a device arranged in a wireless access network to provide a wireless communication function to the terminal device. The network device may be a base station, which may include various types of macro base stations, micro base stations, relay stations, access points, and the like. In systems that use different wireless access technologies, devices with base station functionality may have different names. For example, in an LTE network, it is called Enode B (Evolved NodeB, abbreviated as "eNB" or "eNodeB"), and in a third generation (3rd Generation, abbreviation "3G") network, it is called Node B (Node B).

Upstream transmission of the LTE system supports only multiple access modes, which are Orthogonal Frequency Split Multiplexing (abbreviated as "DFT-S-OFDM") by Discrete Fourier Transform Spread. Only one set of uplink power control parameters used for uplink transmission needs to be arranged, but conventionally, for uplink transmission in a 5G system, DFT-S-OFDM multiple connection mode and cyclic prefix (Cylic Prefix, abbreviated as "CP") are used. -Two types of uplink multiple access modes (or "uplink waveforms") are introduced. The former can be used only for uplink single layer transmission, and the latter can be used for uplink single layer or multilayer transmission. Or terminal apparatus used what multiple access mode, the network side, can be arranged based on the quality of the uplink channel of the terminal device. Always, channel transmission in DFT-S-OFDM multiple access mode has better coverage but lower spectral efficiency. The CP-OFDM multiple access mode has high spectral efficiency, but its coverage is inferior because of its high peak-to-average power ratio (Peek to Average Power Ratio, abbreviated as "PAPR"). When the terminal device transmits an uplink signal using different multiple access modes, the required uplink transmission power is also different because the coverage range is different.

Further, when the terminal equipment transmits an uplink signal using different upstream beams, the received power of the network equipment is different, and therefore, in order to avoid interference of the terminal equipment with other terminal equipment, the receiving power of the network equipment is different. , It is necessary to use different transmission power. Further, in future communication systems, it is necessary to use different transmission powers for different precoding modes because it is necessary to improve the efficiency of transmission powers. Further, in future communication systems, two types of transmission scheduling modes will be introduced: uplink signal transmission by network scheduling and spontaneous uplink signal transmission of the terminal device. Of these, the former schedules by the uplink grant (UL Grant), the latter schedules without the need for the UL Grant, and the terminal device spontaneously transmits the uplink signal when necessary, and the terminal device voluntarily transmits the uplink signal. Different transmission powers need to be used for different transmission scheduling modes to avoid interference with other equipment due to transmission.

If the conventional uplink power control method in LTE is used, the requirements of different transmission modes cannot be satisfied. Therefore, in the embodiment of the present application, by providing the uplink power control method, the terminal device can calculate the uplink transmission power corresponding to each transmission mode by using an independent uplink power control process, and the uplink transmission power can be calculated. It can be flexibly adjusted to meet the requirements of different transmission modes.

In the embodiment of the present application, the uplink transmission is a process in which the terminal device transmits a signal to the network device, and the downlink transmission is a process in which the network device transmits a signal to the terminal device.

FIG. 1 shows an uplink power control method according to an embodiment of the present application. As shown in FIG. 1, the method 100 includes S110 to S130.

S110, the terminal device receives the uplink power control information transmitted from the network device.

S120, the terminal device determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information, the target transmission mode is the target uplink multiple connection mode, or the target transmission mode is the target uplink. It is a beam, or the target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode.

S130, the terminal device determines a target transmission power when transmitting a target uplink signal using the target transmission mode based on the target power control parameter.

According to the uplink power control method according to the embodiment of the present application, the terminal device determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information transmitted from the received network device. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

Specifically, when the terminal device transmits an uplink signal using different uplink access modes, an independent uplink power control process is used to determine the uplink transmission power corresponding to the different uplink access modes. Often, the uplink transmission power can be flexibly adjusted to meet the requirements of different uplink access modes, and is applicable to communication systems that support multiple uplink access modes.

Alternatively, when the terminal device transmits an uplink signal using different uplinks, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the different uplinks, requiring different uplinks. Can be satisfied and the interference of the terminal device with other terminal devices can be controlled. In the embodiment of the present application, when the terminal device uses the target upstream beam to transmit the target upstream signal, the terminal device uses the forming vector corresponding to the target upstream beam mode to beam the target upstream signal. It is to perform forming.

Alternatively, if the terminal device transmits uplink signals using different precoding modes, an independent uplink power control process may be used to determine the uplink transmit power corresponding to the different precoding modes, with different precoding. It is possible to increase the efficiency of transmission power in satisfying the requirements of the mode, allowing different precoding modes to use different transmission powers, and guaranteeing performance. In the embodiments of the present application, the precoding mode includes single port transmission, transmission diversity, spatial multiplexing, open loop precoding, semi-open loop precoding, closed loop precoding, and the like.

Alternatively, when the terminal equipment transmits uplink signals using different transmission scheduling modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the different transmission scheduling modes, with different transmission scheduling. The mode requirements can be met and interference with other terminal devices due to spontaneous uplink transmission of the terminal device can be avoided.

The terminal device determines the target transmission power when transmitting the target uplink signal using the target transmission mode based on the target power control parameter, and then uses the target transmission mode and the target transmission power at the current time. The target uplink signal may be transmitted, or the target uplink signal may not be transmitted at the current time using the target transmission mode. If the terminal device does not transmit the target uplink signal at the current time using the target transmission mode, the terminal device stores the determined target transmission power, and later when actually transmitting the target uplink signal using the target transmission mode, The target rising signal may be transmitted using the determined target transmission power.

Further, the target transmission mode may be one of a plurality of candidate transmission modes that the terminal device may use to transmit the target uplink signal, in which case the terminal device may: Based on the uplink power control information transmitted from the network device, the power control parameters corresponding to each candidate transmission mode are determined. Alternatively, the target transmission mode is a transmission mode that the terminal device must use to transmit the target uplink signal, and in this case, the terminal device performs the target transmission based on the transmission command information arranged on the network side. The mode may be fixed. For example, the target transmission mode is displayed and commanded by, for example, a radio resource control (Radio Resource Control, abbreviated as "RRC") message, or a signaling such as Downlink Control Information, abbreviated as "DCI". Good. Alternatively, the target transmission mode may be concealed and commanded by other information, for example, different DCI formats correspond to different transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of transmission modes. For example, when the target transmission mode is the target uplink multiple access mode, the target uplink connection mode is one of the plurality of uplink connection modes. For example, the target uplink multiple access mode is Orthogonal Frequency Division Multiplexing by Discrete Fourier Transform Spread (Fourier Transfer Orthogonal Frequency Multiplexing, abbreviated as "DFT-S-OFDM"), cyclic prefix (Cyclic Prefix), abbreviated as Cyclic Prefix. OFDM, Single Carrier Frequency Division Multiple Access (abbreviated as "SC-FDMA") and Orthogonal Frequency Division Multiple Connection (Orthogonal Frequency Division Multiple Access) .. Alternatively, when the target transmission mode is the target upstream beam, the target upstream beam is one of the plurality of upstream beams. Alternatively, when the target transmission mode is the target uplink precoding mode, the target uplink precoding mode is one of the plurality of precoding modes. Alternatively, when the target transmission mode is the target transmission scheduling mode, the target transmission scheduling mode is one of a plurality of transmission scheduling modes.

In one embodiment of the present application, the uplink power control information includes open-loop power control information, the open-loop power control information includes open-loop power control parameters corresponding to a plurality of transmission modes, and a plurality of transmissions. The mode includes the target transmission mode. The terminal device determines the target open-loop power control parameter corresponding to the target transmission mode in the open-loop power parameter based on the open-loop power control information.

Specifically, the open-loop power control information includes open-loop power control parameters corresponding to a plurality of uplink connection modes, and / or the open-loop power control information includes open corresponding to a plurality of uplink beams. The loop power control parameters are included and / or the open loop power control information includes open loop power control parameters corresponding to a plurality of target uplink precoding modes, and / or the open loop power control information includes a plurality of open loop power control parameters. Contains open-loop power control parameters corresponding to the transmission scheduling mode of.

As an example, the target open loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal (abbreviated as "SRS") power adjustment value.

As an example, the terminal device receives the open loop power control information transmitted by the network device by the RRC message. The network device arranges each open-loop power control parameter in a different transmission mode (for example, different uplink multiple access modes) according to the open-loop power control information.

Specifically, in some embodiments, the network apparatus places the complete open-loop power control parameters in one transmission mode and the other transmission modes with open-loop power control parameters corresponding to such transmission modes. An offset value may be placed relative to this, which can save downlink signaling overhead. Taking the transmission mode as the uplink multiple access mode as an example, the network device arranges the uplink target reception power corresponding to DFT-S-OFDM at -60 dBm, and the uplink target reception power corresponding to CP-OFDM is DFT-S. -The offset value with respect to the uplink target received power corresponding to OFDM is arranged at 10 dBm.

Alternatively, in some embodiments, the network device places a complete open-loop power control parameter in each transmission mode. Taking the transmission mode as the uplink multiple access mode as an example, the network device sets the uplink target received power corresponding to DFT-S-OFDM to -60 dBm, the path loss factor to 1, and the uplink target corresponding to CP-OFDM. The received power is set to 20 dBm, and the path loss factor is set to 2. When the terminal device determines to transmit the target uplink signal using one of the uplink multiple access modes, the target uplink signal is based on these open-loop power control parameters corresponding to the determined uplink access mode. Calculate the transmission power.

In one embodiment of the present application, the uplink power control information includes power adjustment command information, and the terminal device has a target closed loop power adjustment value corresponding to the target transmission mode based on the power adjustment command information and the preset correspondence relationship. The preset correspondence is the correspondence between the power adjustment command information and the closed loop power adjustment value.

In an embodiment of it has several, the terminal device receives the DCI transmitted from the network device, wherein the DCI, include power adjustment command information. Further, here, the DCI may be the DCI used for scheduling the target uplink signal transmission, or may be the DCI exclusively for receiving the power adjustment command information. In this case, the DCI is used for scheduling the target uplink signal transmission. Not used.

As an example, the preset correspondence may be predetermined by the terminal device and the network device, or the network device may be arranged in the terminal device by command information. Table 1 shows the preset correspondence. Note that Table 1 shows only an example of preset correspondences, and is not intended to limit the preset correspondences.

In the embodiment of the present application, the value of the closed loop power adjustment value instructed to the same instruction domain in the power adjustment instruction information may be different for different transmission modes. As a result, the terminal device needs to determine the target correspondence from the preset correspondence based on the target transmission mode, and then determines the target closed-loop power adjustment value based on the power adjustment command information and the target correspondence. To do. For example, for different uplink multiple access modes, the correspondence between the power adjustment command information and the closed loop power adjustment value may be promised in advance by the terminal device and the network device, and the terminal device may be used by the command information using the network device. May be placed in. For example, Table 2 shows other correspondences between power adjustment instruction information and closed-loop power adjustment values.

In one embodiment of the present application, the target closed-loop power adjustment value may be an absolute value adjusted based on the open-loop power, or may be a cumulative value adjusted based on the previous transmission power. The network device uses signaling to determine whether the target closed-loop power adjustment value of the terminal device is an absolute value adjusted based on the open-loop power or a cumulative value adjusted based on the previous transmission power. You may.

Specifically, in some embodiments, the target closed-loop power adjustment value is an adjustment value for which the target transmit power is relative to the first transmit power, and the first transmit power is the same as the type of the previous target uplink signal for the terminal device. This is the transmission power used when transmitting the uplink signal. For example, the target closed-loop power adjustment value is an adjustment value for the transmission power at which the terminal device transmits an uplink physical shared channel (Physical Uplink Shared Channel, abbreviated as “PUSCH”) with respect to the transmission power at which the terminal device previously transmitted the PUSCH. May be good.

Alternatively, the target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the same uplink signal as the target uplink type when the terminal device uses the previous target transmission mode. This is the transmission power used when transmitting. For example, the target closed-loop power adjustment value is an adjustment value for the transmission power at which the terminal device transmits the PUSCH using DFT-S-OFDM and the transmission power at which the terminal device previously transmitted the PUSCH using DFT-S-OFDM. is there.

Alternatively, the target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission power of the same uplink signal as the type of the target uplink signal recently determined by the terminal device. For example, the target closed-loop power adjustment value is an adjustment value for which the transmission power for transmitting the PUSCH by the terminal device is a recently calculated transmission power for the PUSCH. Here, the terminal device does not mean that it is necessary to actually transmit the PUSCH when updating the transmission power, but the terminal device stores the recently calculated transmission power of the PUSCH and transmits it to the subsequent PUSCH. Use.

Alternatively, the target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device and is the target uplink signal. It is the transmission power of the same uplink signal as the type. For example, the target power adjustment value is the transmission power at which the terminal device transmits the PUSCH using the DFT-S-OFDM, and the transmission power at which the terminal device transmits the PUSCH using the recently calculated (or recently updated) DFT-S-OFDM. It is an adjustment value for. Here, the terminal device does not mean that it is necessary to actually transmit the PUSCH when updating the transmission power, but the terminal device stores the recently calculated transmission power of the PUSCH and transmits it to the subsequent PUSCH. Use.

Alternatively, the target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fifth transmission power, and the fifth transmission power is a target determined by the terminal device based on the open-loop power control parameter corresponding to the target transmission mode. It is the transmission power of the uplink signal. Here, the open-loop power control parameter may be a parameter in which the network device is arranged by higher-level signaling, and examples thereof include a target received power and a path loss factor. The terminal device may calculate the transmit power based on equation (1) and the open loop power control parameters.

は上り伝送帯域幅であり、

は目標受信電力であり、

は経路損失要因であり、ＰＬは下り経路損失であり、

は変調・符号化方法（Ｍｏｄｕｌａｔｉｏｎ ａｎｄ Ｃｏｄｉｎｇ Ｓｃｈｅｍｅ、略称「ＭＣＳ」）に関連する調整値である。 here,

Is the uplink transmission bandwidth,

Is the target received power

Is the path loss factor, PL is the downlink path loss,

Is an adjustment value related to a modulation / coding scheme (abbreviated as “MCS”).

In the above embodiment, even if the terminal device determines the target open-loop power control parameter corresponding to the target transmission mode based on the open-loop power control parameters arranged in different transmission modes by the network device by higher-level signaling. Good. Further, the target closed loop power adjustment value corresponding to the target transmission mode is determined based on the power adjustment command information carried by the network device by DCI. After that, the terminal device calculates the target transmission power based on the target open-loop power control parameter, the target closed-loop power adjustment value, the preset transmission power calculation method, or the formula.

Further, after the terminal device determines the target transmit power, the method 100 further includes S140, as shown in FIG.

S140, the terminal device transmits the target uplink signal to the network device using the target transmission mode and the target transmission power.

As an example, in all the embodiments described above, the goal uplink signal, PUSCH, a physical uplink control channel (Physical Uplink Control Channel, abbreviated "PUCCH"), SRS and the demodulation reference signal (De Modulation Reference Signal, abbreviated "DMRS ") Is one of them.

As described above, the uplink power control method according to the embodiment of the present application will be described in detail from the terminal device side with reference to FIGS. 1 and 2, and the present application will be implemented from the network device side with reference to FIGS. 3 and 4 below. An example upstream power control method will be described in detail. The interaction between the network device and the terminal device described from the network device side is the same as that described from the terminal device side, and the related description will be omitted as appropriate to avoid duplication.

FIG. 3 is an uplink power control method according to another embodiment of the present application, and as shown in FIG. 3, the method 200 includes S210 to S220.

S210, the network device to confirm the up power control information, the uplink power control information, to confirm the target power control parameter end terminal apparatus corresponds to the target transmission mode, and based on the target power control parameter, the target Used to determine the target transmit power when transmitting a target uplink signal using a transmission mode, the target transmission mode is a target uplink multiple connection mode, or the target transmission mode is a target uplink beam, or The target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode.

S220, the network device transmits the uplink power control information to the terminal device.

Therefore, according to the uplink power control method according to the embodiment of the present application, the network device transmits the uplink power control information to the terminal device, and the target corresponding to the target transmission mode is based on the uplink power control information received by the terminal device. Allows the power control parameters to be determined. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of candidate transmission modes in which the terminal device transmits the target uplink signal, or the target transmission mode is the terminal. This is the transmission mode that the device must use to transmit the target uplink signal.

In one embodiment of the present application, the uplink power control information includes open-loop power control information, and the open-loop power control information includes open-loop power control parameters corresponding to a plurality of transmission modes. The transmission mode includes the target transmission mode, and the open-loop power control information is used by the terminal device to determine the target open-loop power control parameter corresponding to the target transmission mode in the open-loop power control parameter. Be done.

In one embodiment of the present application, S220 specifically comprises transmitting the open-loop power control information to the terminal device by the network device via a radio resource control RRC message.

In one embodiment of the present application, the target open loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal SRS power adjustment value.

In one embodiment of the present application, the uplink power control information includes power adjustment command information, and the power adjustment command information is based on the power adjustment command information and a preset correspondence relationship of the terminal device. It is used to determine the target closed-loop power adjustment value corresponding to the target transmission mode, and the preset correspondence is the correspondence between the power adjustment command information and the closed-loop power adjustment value.

In one embodiment of the present application, S120 specifically includes the network device transmitting downlink control signaling DCI to the terminal device, which includes the power adjustment command information.

In one embodiment of the present application, the target closed-loop power adjustment value is an adjustment value of the target transmission power with respect to the first transmission power, and the first transmission power is the same as the type of the target uplink signal of the terminal device last time. It is the transmission power used when transmitting the uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the type of the target uplink signal when the terminal device previously used the target transmission mode. It is the transmission power used when transmitting the same uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device, and said. The same uplink transmission power as the target uplink type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target transmission mode. It is the transmitted power of the determined target uplink signal.

In one embodiment of the present application, the method 200 further comprises S230, as shown in FIG.

S230, the network device receives the target uplink signal transmitted by the terminal device using the target transmission mode and the target transmission power.

In one embodiment of the present application, the target uplink signal is one of the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS, and the demodulation reference signal DMRS.

In one embodiment of the present application, the target uplink multiple access mode is orthogonal frequency division multiple access DFT-S-OFDM by discrete Fourier transform diffusion, cyclic prefix orthogonal frequency division multiple access CP-OFDM, and single carrier frequency division multiple access SC-FDMA. And one of the orthogonal frequency division multiple access OFDMAs.

As described above, the uplink power control method according to the embodiment of the present application will be described in detail with reference to FIGS. 1 to 4, and the terminal device according to the embodiment of the present application will be described in detail with reference to FIG. As shown in 5, the terminal device 10 includes a transmission / reception module 11 and a processing module 12.

The transmission / reception module 11 is used to receive the uplink power control information transmitted from the network device.

The processing module 12 is used to determine the target power control parameter corresponding to the target transmission mode based on the uplink power control information, and the target transmission mode is the target uplink multiple connection mode or the target transmission mode. Is a target uplink beam, or the target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode.

The processing module 12 is further used to determine the target transmission power when transmitting the target uplink signal using the target transmission mode based on the target power control parameter.

Therefore, the terminal device according to the embodiment of the present application determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information transmitted from the received network device. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of candidate transmission modes in which the terminal device transmits the target uplink signal, or the target transmission mode is the terminal. This is the transmission mode that the device must use to transmit the target uplink signal.

In one embodiment of the present application, the uplink power control information includes open-loop power control information, and the open-loop power control information includes open-loop power control parameters corresponding to a plurality of transmission modes. The transmission mode of includes the target transmission mode.

Here, the processing module 12 is specifically used to determine the target open-loop power control parameter corresponding to the target transmission mode in the open-loop power control parameter based on the open-loop power control information. Be done.

In one embodiment of the present application, the transmission / reception module 11 is specifically used to receive the open-loop power control information transmitted by the network device by a radio resource control RRC message.

In one embodiment of the present application, the target open loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal SRS power adjustment value.

In one embodiment of the present application, the uplink power control information includes power adjustment command information.

Here, the processing module 12 is specifically used to determine the target closed loop power adjustment value corresponding to the target transmission mode based on the power adjustment command information and the preset correspondence relationship, and is preset. The correspondence is the correspondence between the power adjustment command information and the closed loop power adjustment value.

In one embodiment of the present application, the processing module 12 specifically determines a target correspondence relationship from the preset correspondence relationship based on the target transmission mode, and obtains the power adjustment command information and the target correspondence relationship. Based on this, it is used to determine the target closed loop power adjustment value.

In one embodiment of the present application, the transmission / reception module 11 is specifically used to receive downlink control signaling DCI transmitted from the network device, and the DCI includes the power adjustment command information.

In one embodiment of the present application, the target closed-loop power adjustment value is an adjustment value of the target transmission power with respect to the first transmission power, and the first transmission power is the same as the type of the target uplink signal of the terminal device last time. It is the transmission power used when transmitting the uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the type of the target uplink signal when the terminal device previously used the target transmission mode. It is the transmission power used when transmitting the same uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device, and said. The same uplink transmission power as the target uplink type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target transmission mode. It is the transmitted power of the determined target uplink signal.

In one embodiment of the present application, the transmit / receive module 11 is further used to transmit the target uplink signal to the network device using the target transmission mode and the target transmission power.

In one embodiment of the present application, the target uplink signal is one of the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS, and the demodulation reference signal DMRS.

In one embodiment of the present application, the target uplink multiple access mode is orthogonal frequency division multiple access DFT-S-OFDM by discrete Fourier transform diffusion, cyclic prefix orthogonal frequency division multiple access CP-OFDM, and single carrier frequency division multiple access SC-FDMA. And one of the orthogonal frequency division multiple access OFDMAs.

The terminal device according to the embodiment of the present application may refer to the flow corresponding to the method 100 of the embodiment of the present application, and each unit / module and the other operation and / or function described above in the terminal device may be referred to by the method. The purpose is to realize the corresponding flow in 100, and the description thereof will be omitted for the sake of brevity.

FIG. 6 shows a network device according to an embodiment of the present application, and as shown in FIG. 6, the network device 20 includes a processing module 21 and a transmission / reception module 22.

The processing module 21 is used to determine the uplink power control information, and the uplink power control information determines the target power control parameter corresponding to the target transmission mode by the terminal device and is based on the target power control parameter. The target transmission mode is used to determine the target transmission power when transmitting the target uplink signal using the target transmission mode, the target transmission mode is the target uplink multiple connection mode, or the target transmission mode is the target uplink beam. Or, the target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode.

The transmission / reception module 22 is used to transmit the uplink power control information to the terminal device.

Therefore, the network device according to the embodiment of the present application can determine the target power control parameter corresponding to the target transmission mode based on the uplink power control information received by the terminal device by transmitting the uplink power control information to the terminal device. Let me. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of transmission modes.

In one embodiment of the present application, the target transmission mode is one of a plurality of candidate transmission modes in which the terminal device transmits the target uplink signal, or the target transmission mode is the terminal. This is the transmission mode that the device must use to transmit the target uplink signal.

In one embodiment of the present application, the uplink power control information includes open-loop power control information, and the open-loop power control information includes open-loop power control parameters corresponding to a plurality of transmission modes. The transmission mode includes the target transmission mode, and the open-loop power control information is used by the terminal device to determine the target open-loop power control parameter corresponding to the target transmission mode in the open-loop power control parameter. Be done.

In one embodiment of the present application, the transmission / reception module 22 is specifically used to transmit the open-loop power control information to the terminal device by a radio resource control RRC message.

In one embodiment of the present application, the target open loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal SRS power adjustment value.

In one embodiment of the present application, the uplink power control information includes power adjustment command information, and the power adjustment command information is based on the power adjustment command information and a preset correspondence relationship of the terminal device. It is used to determine the target closed-loop power adjustment value corresponding to the target transmission mode, and the preset correspondence is the correspondence between the power adjustment command information and the closed-loop power adjustment value.

In one embodiment of the present application, the transmission / reception module 22 is specifically used to transmit downlink control signaling DCI to the terminal device, and the DCI includes the power adjustment command information.

In one embodiment of the present application, the target closed-loop power adjustment value is an adjustment value of the target transmission power with respect to the first transmission power, and the first transmission power is the same as the type of the target uplink signal of the terminal device last time. It is the transmission power used when transmitting the uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the type of the target uplink signal when the terminal device previously used the target transmission mode. It is the transmission power used when transmitting the same uplink signal, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target transmission mode recently determined by the terminal device, and said. The same uplink transmission power as the target uplink type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target transmission mode. It is the transmitted power of the determined target uplink signal.

In one embodiment of the present application, the transmit / receive module 22 is further used by the terminal device to receive the transmitted target uplink signal using the target transmission mode and the target transmission power.

In one embodiment of the present application, the target uplink signal is one of the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS, and the demodulation reference signal DMRS.

In one embodiment of the present application, the target uplink multiple access mode is orthogonal frequency division multiple access DFT-S-OFDM by discrete Fourier transform diffusion, cyclic prefix orthogonal frequency division multiple access CP-OFDM, and single carrier frequency division multiple access SC-FDMA. And one of the orthogonal frequency division multiple access OFDMAs.

The network device according to the embodiment of the present application may refer to the flow corresponding to the method 200 of the embodiment of the present application, and each unit / module and the other operation and / or function described above in the network device may be referred to by the method. The purpose is to realize the corresponding flow in 200, and the description thereof will be omitted for the sake of brevity.

FIG. 7 shows a terminal device according to another embodiment of the present application. As shown in FIG. 7, the terminal device 100 includes a processor 110 and a transmitter / receiver 120, the processor 110 is connected to the transmitter / receiver 120, and in one embodiment, the terminal device 100 further includes a memory 130 and is a memory. 130 is connected to processor 110. Here, the processor 110, the memory 130, and the transmitter / receiver 120 can communicate with each other via an internal connection circuit. Here, the transmitter / receiver 120 is used to receive the uplink power control information transmitted from the network device. The processor 110 is used to determine a target power control parameter corresponding to a target transmission mode based on the uplink power control information, and the target transmission mode is a target uplink multiple connection mode or the target transmission mode. Is a target uplink beam, or the target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode. Based on the target power control parameter, the target transmission power when transmitting the target uplink signal using the target transmission mode is determined.

Therefore, the terminal device according to the embodiment of the present application determines the target power control parameter corresponding to the target transmission mode based on the uplink power control information transmitted from the received network device. As a result, when the terminal device transmits an uplink signal using different transmission modes, an independent uplink power control process may be used to determine the uplink transmission power corresponding to the transmission mode, and the uplink transmission power is flexible. It can be adjusted to meet the requirements of different transmission modes and is applied to communication systems that support multiple transmission modes.

The terminal device 100 according to the embodiment of the present application may refer to the terminal device 10 corresponding to the embodiment of the present application, and each unit / module and the other operation and / or function described above in the terminal device may be described by methods. The purpose is to realize the corresponding flow in 100, and the description thereof will be omitted for the sake of brevity.

FIG. 8 shows a schematic block diagram of a network device according to another embodiment of the present application. As shown in FIG. 8, the network device 200 includes a processor 210 and a transmitter / receiver 220, and the processor 210 is connected to the transmitter / receiver 220 . before SL network device 200 further includes a memory 230, a memory 230 is coupled to the processor 210. Here, the processor 210, the memory 230, and the transmitter / receiver 220 can communicate with each other via an internal connection circuit. Here, the processor 210 is used to determine the uplink power control information, and the uplink power control information determines the target power control parameter corresponding to the target transmission mode by the terminal device, and the target power control. Based on the parameters, it is used to determine the target transmission power when transmitting the target uplink signal using the target transmission mode, the target transmission mode is the target uplink multiple connection mode, or the target transmission mode is It is a target uplink beam, or the target transmission mode is a target uplink precoding mode, or the target transmission mode is a target transmission scheduling mode. The transmitter / receiver 220 is used to transmit the uplink power control information to the terminal device.

Therefore, the network device according to the embodiment of the present application can determine the target power control parameter corresponding to the target transmission mode based on the uplink power control information received by the terminal device by transmitting the uplink power control information to the terminal device. Let me. As a result, when the terminal device transmits the uplink signal using different transmission modes, the uplink transmission power corresponding to the transmission mode may be determined by using an independent uplink power control process, and the uplink transmission power can be flexibly set. It can be tuned to meet the requirements of different transmission modes and is applicable to communication systems that support multiple transmission modes.

The network device 200 according to the embodiment of the present application may refer to the network device 20 corresponding to the embodiment of the present application, and each unit / module and the other operation and / or function described above in the network device may be referred to by the method. The purpose is to realize the corresponding flow in 200, and the description thereof will be omitted for the sake of brevity.

The processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability. The above processors include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (Field Programmable Gate Array, etc.), FPs, and FPs. It may be a logic device, a discrete gate, or a transistor logic device, a discrete hardware component. Each method, step and logical block diagram disclosed in the embodiments of the present application can be realized or implemented. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor or the like.

The memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both a volatile memory and a non-volatile memory. Here, the non-volatile memory includes a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), and an electrically erasable memory. It may be a programmable read-only memory (Electricularly EPROM, EPROM) or a flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of illustration, not limiting, many types of RAM can be used, such as static random access memory (Static RAM, DDR), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous dynamic random access memory). Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Late SDRAM, DDR SDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SL DRAM) ) And direct rambus random access memory (Direct Rambus RAM, DR RAM). Note that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable type of memory.

As will be appreciated by those skilled in the art, the combination of units and algorithm steps of each example described in the embodiments disclosed in the present application is realized by electronic hardware or a combination of computer software and electronic hardware. it can. Whether these functions are performed in the form of hardware or software is determined by the specific application and design limitations of the technical solution. One of ordinary skill in the art may realize the functions described using different methods for each particular application, but such realization should not be acknowledged to be beyond the scope of the present application.

To make the description convenient and concise for those skilled in the art, the specific operating processes of the systems, devices and units described above refer to the corresponding processes in the embodiments of the methods described above. It may be referred to, and the description thereof will be omitted here.

It should be noted that in some of the embodiments provided in the present application, the disclosed systems, devices and methods may be implemented in other embodiments. For example, the embodiment of the device described above is only a schematic one. For example, the division of the unit is only a logic function division, and may be performed in another division mode when actually realized. For example, multiple units or components may be combined or integrated into other systems, or some features may be ignored or not performed. On the other hand, the mutual coupling, direct coupling, or communication connection displayed or examined may be an indirect coupling by some interface, device or unit, or communication connection, electrical, mechanical, Alternatively, it may be in another form.

The unit described as the above-mentioned separating member may be physically separated or may not be separated, and the member displayed as a unit may be a physical unit. Alternatively, it may not be a physical unit, that is, it may be located in one place, or it may be distributed to a plurality of network units. The purpose of the technical solution of this embodiment may be achieved by selecting some or all of the units according to the actual requirements.

Further, each functional unit in each embodiment of the present application may be integrated in one processing unit, each unit may physically exist independently, or two or two or more units may be integrated into one unit. It may be accumulated.

The functions are realized in the form of software functional units and may be stored in one computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present application, the part that contributes to the prior art, or the part of the technical solution may be expressed in the form of a software product, and the computer software. The product is stored in one storage medium, and one computer device (which may be a personal computer, a server, a network device, etc.) performs all or some steps of the methods described in each embodiment of the present application. Includes some instructions to get it done. The storage medium includes various media capable of storing a program code, such as a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disk. Including.

The above description is merely a specific embodiment of the present application, and the scope of the present application is not limited thereto, and those skilled in the art can easily conceive within the technical scope disclosed in the present application. All changes or substitutions obtained fall within the scope of the present application. Therefore, the scope of the present application should be based on the claims.

Claims (16)

It is an uplink power control method.
The terminal device receives the uplink power control information transmitted from the network device , the uplink power control information includes open-loop power control information, and the open-loop power control information corresponds to a plurality of precoding modes. Includes open-loop power control parameters, multiple precoding modes include target uplink precoding modes ,
And it is the terminal device for determining the on the basis of the up power control information, the target power control parameter corresponding to the target uplink precoding mode,
The terminal device based on the target power control parameters, see containing and to determine the target transmission power when transmitting a target uplink signal using the target uplink precoding mode,
The terminal device determines the target power control parameter corresponding to the target uplink precoding mode based on the uplink power control information.
The terminal device includes determining a target open-loop power control parameter corresponding to the target uplink precoding mode in the open-loop power control parameter based on the open-loop power control information. Control method. The target uplink precoding mode, the terminal device is a one candidate precoding mode among the plurality of candidate precoding mode for transmitting the target uplink signal, or the target uplink precoding mode, the terminal device the method of claim 1, wherein the but to transmit the target uplink signal, a pre-coding mode that should be used. Receiving the uplink power control information transmitted from the network device by the terminal device includes receiving the open-loop power control information transmitted by the network device by the radio resource control RRC message. The method according to claim 1 or 2 , wherein the method is characterized by. The target open-loop power control parameter according to any one of claims 1 to 3, wherein the target open-loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal SRS power adjustment value. the method of. The uplink power control information includes power adjustment command information.
The terminal device determines the target power control parameter corresponding to the target uplink precoding mode based on the uplink power control information.
The terminal device includes determining a target closed-loop power adjustment value corresponding to the target uplink precoding mode based on the power adjustment command information and a preset correspondence, and the preset correspondence is a power adjustment command. The method according to any one of claims 1 to 4 , wherein the information has a correspondence relationship with the closed loop power adjustment value. The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the first transmission power, and the first transmission power is the first transmission power when the terminal device previously transmitted the same uplink signal as the target uplink signal type. It is the transmission power used, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the target uplink signal of the target uplink signal when the terminal device previously used the target uplink precoding mode. It is the transmission power used when transmitting the same uplink signal as the type, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target uplink precoding mode recently determined by the terminal device. And the transmission power of the uplink signal is the same as that of the target uplink signal type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target uplink precoding mode. The method according to claim 5 , wherein the transmission power of the target uplink signal is determined. The method further
The invention according to any one of claims 1 to 6 , wherein the terminal device transmits the target uplink signal to the network device using the target uplink precoding mode and the target transmission power. the method of. The target uplink signal according to any one of claims 1 to 7 , wherein the target uplink signal is one of the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS, and the demodulation reference signal DMRS. Method. It ’s a terminal device,
It is used to receive uplink power control information transmitted from a network device , the uplink power control information includes open-loop power control information, and the open-loop power control information is in a plurality of precoding modes. The corresponding open-loop power control parameters are included, and multiple precoding modes include a transmit / receive module that includes a target uplink precoding mode.
On the basis of the up power control information, and a processing module that is used to determine the target power control parameter corresponding to the target uplink precoding mode,
The processing module is further used to determine the target transmit power when transmitting the target uplink signal using the target uplink precoding mode based on the target power control parameters .
The processing module is used to determine a target open-loop power control parameter corresponding to the target uplink precoding mode in the open-loop power control parameter based on the open-loop power control information. Terminal device. The target uplink precoding mode, the terminal device is a one candidate precoding mode among the plurality of candidate precoding mode for transmitting the target uplink signal, or the target uplink precoding mode, the terminal device 9. The terminal device according to claim 9 , wherein is a precoding mode that needs to be used in order to transmit the target uplink signal. The terminal device according to claim 9 or 10 , wherein the transmission / reception module is used for receiving the open-loop power control information transmitted by the network device by a radio resource control RRC message. The target open-loop power control parameter according to any one of claims 9 to 11, wherein the target open-loop power control parameter includes at least one of an uplink target received power, a path loss factor, and a sounding reference signal SRS power adjustment value. Terminal device. The uplink power control information includes power adjustment command information.
The processing module is used to determine the target closed-loop power adjustment value corresponding to the target uplink precoding mode based on the power adjustment command information and the preset correspondence, and the preset correspondence is the power adjustment. The terminal device according to any one of claims 9 to 12 , wherein the relationship is a correspondence between instruction information and a closed-loop power adjustment value. The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the first transmission power, and the first transmission power is the first transmission power when the terminal device previously transmitted the same uplink signal as the target uplink signal type. It is the transmission power used, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the second transmission power, and the second transmission power is the target uplink signal of the target uplink signal when the terminal device previously used the target uplink precoding mode. It is the transmission power used when transmitting the same uplink signal as the type, or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the third transmission power, and the third transmission power is the transmission of the same uplink signal as the target uplink type recently determined by the terminal device. It is electric power or
The target closed-loop power adjustment value is an adjustment value for which the target transmission power is relative to the fourth transmission power, and the fourth transmission power is transmitted using the target uplink precoding mode recently determined by the terminal device. And the transmission power of the uplink signal is the same as that of the target uplink signal type, or
The target closed-loop power adjustment value is an adjustment value for the target transmission power with respect to the fifth transmission power, and the fifth transmission power is based on an open-loop power control parameter in which the terminal device corresponds to the target uplink precoding mode. The terminal device according to claim 13 , wherein the transmission power of the target uplink signal is determined. Any of claims 9 to 14 , wherein the transmission / reception module is further used to transmit the target uplink signal to the network device using the target uplink precoding mode and the target transmission power. The terminal device according to paragraph 1. The target uplink signal according to any one of claims 9 to 15 , wherein the target uplink signal is one of the uplink physical shared channel PUSCH, the uplink physical control channel PUCCH, SRS, and the demodulation reference signal DMRS. Terminal device.

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